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Old 21-03-2010, 07:11 PM
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batema (Mark)
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batema is offline
Join Date: Jul 2006
Location: Sunshine Coast
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Advice needed when adding Luminance layer to RGB.


I am using Photoshop CS3 and need help.

I am opening my Red stacked image and using it as a base convert it from grayscale to RGB. I then open green image and copy it and paste it into the green layer in the channels section. I do the same for Blue but at this stage I have no histogram as the images I think are 32 bit. I then go to image mode and make the red channel active and reduce it to 16 bit (i think) and then my histogram comes up.

I have then tried to create another layer in the channels section and paste the luminance layer into the channels but I think because the luminance was taken at 1x1 binning and colours at 2x2 they don't line.

Is this the correct way to do this as I am using the Photoshop Astronomy book but have lost the plot.

Any advice would be greatly appreciated.


Last edited by batema; 21-03-2010 at 07:31 PM.
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